/*
 * Copyright (c) 2004-2023, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * Neither the name of the HISP project nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.cacheinvalidation.redis;

import static org.hisp.dhis.common.CodeGenerator.generateUid;

import io.lettuce.core.RedisClient;
import io.lettuce.core.RedisURI;
import io.lettuce.core.api.StatefulRedisConnection;
import io.lettuce.core.pubsub.StatefulRedisPubSubConnection;
import io.lettuce.core.resource.ClientResources;
import io.lettuce.core.resource.DefaultClientResources;
import java.util.List;
import org.hisp.dhis.external.conf.ConfigurationKey;
import org.hisp.dhis.external.conf.ConfigurationPropertyFactoryBean;
import org.hisp.dhis.external.conf.DhisConfigurationProvider;
import org.hisp.dhis.scheduling.JobConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Conditional;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;

/**
 * It configures the Redis client and the connection to the Redis server
 *
 * @author Morten Svanæs <msvanaes@dhis2.org>
 */
@Order(10002)
@Configuration
@Conditional(value = CacheInvalidationEnabledConditionNotTestable.class)
public class CacheInvalidationConfig {
  public static final List<Class<?>> EXCLUDE_LIST = List.of(JobConfiguration.class);

  public static final String CHANNEL_NAME = "dhis2_cache_invalidation";

  @Bean(name = "cacheInvalidationServerId")
  public String getCacheInvalidationServerId() {
    return generateUid();
  }

  @Bean
  public ConfigurationPropertyFactoryBean redisHost() {
    return new ConfigurationPropertyFactoryBean(ConfigurationKey.REDIS_HOST);
  }

  @Bean
  public ConfigurationPropertyFactoryBean redisPort() {
    return new ConfigurationPropertyFactoryBean(ConfigurationKey.REDIS_PORT);
  }

  @Bean
  public ConfigurationPropertyFactoryBean redisPassword() {
    return new ConfigurationPropertyFactoryBean(ConfigurationKey.REDIS_PASSWORD);
  }

  @Bean
  public ConfigurationPropertyFactoryBean redisSslEnabled() {
    return new ConfigurationPropertyFactoryBean(ConfigurationKey.REDIS_USE_SSL);
  }

  @Bean(destroyMethod = "shutdown")
  ClientResources clientResources() {
    return DefaultClientResources.create();
  }

  @Bean(destroyMethod = "shutdown", name = "redisClient")
  RedisClient redisClient(ClientResources clientResources) {
    Object hostProperty = redisHost().getObject();
    Object portProperty = redisPort().getObject();

    if (hostProperty == null || portProperty == null) {
      throw new IllegalArgumentException("Redis host/port configuration properties is not set");
    }

    Object passwordProperty = redisPassword().getObject();
    Object sslEnabledProperty = redisSslEnabled().getObject();

    String host = (String) hostProperty;
    int port = Integer.parseInt((String) portProperty);

    RedisURI.Builder builder = RedisURI.builder().withHost(host).withPort(port);

    if (passwordProperty != null) {
      builder.withPassword(((String) passwordProperty).toCharArray());
    }

    if (sslEnabledProperty != null) {
      builder.withSsl(DhisConfigurationProvider.isOn((String) sslEnabledProperty));
    }

    return RedisClient.create(clientResources, builder.build());
  }

  @Bean(destroyMethod = "close", name = "redisConnection")
  StatefulRedisConnection<String, String> connection(RedisClient redisClient) {
    return redisClient.connect();
  }

  @Bean(destroyMethod = "close", name = "pubSubConnection")
  StatefulRedisPubSubConnection<String, String> pubSubConnection(RedisClient redisClient) {
    return redisClient.connectPubSub();
  }

  @Bean
  public CacheInvalidationPreStartupRoutine redisCacheInvalidationPreStartupRoutine() {
    CacheInvalidationPreStartupRoutine routine = new CacheInvalidationPreStartupRoutine();
    routine.setName("redisPreStartupRoutine");
    routine.setRunlevel(20);
    routine.setSkipInTests(true);
    return routine;
  }

  @Bean
  public StartupCacheInvalidationServiceRoutine redisCacheInvalidationServiceRoutine() {
    StartupCacheInvalidationServiceRoutine routine = new StartupCacheInvalidationServiceRoutine();
    routine.setName("redisCacheInvalidationPreStartupRoutine");
    routine.setRunlevel(1);
    routine.setSkipInTests(true);
    return routine;
  }
}
